mendeley.php

<?php
include './config.php';

/*
*This function queries Mendeley search for terms of the tweet
*
*/
	$q = urldecode($_REQUEST['key1']);

	//remove stopwords and any URLs
	$textClean = removeCommonWords(cleaner($q));
	$full = preg_replace('/\W+/',' ', $textClean); 
	
	$parts = explode(' ', $full);
	$num = count($parts);
	
	//Trying to create word pairs to use as query. This bit determines quality of returned articles. Different pairs produce differing results.
	//Could advance this with more sophisticated algorithm
	for($j=0,$num;$j<$num;$j++) { 
		if($parts[$j]=='') {$h=$j+1;} else {$h=$j;}
		$nodes[] = 'http://api.mendeley.com/oapi/documents/search/'.urlencode($parts[$h].' '.$parts[$h+1].' '.$parts[$h+2]).'/?page=1&items=2&consumer_key='.$apiKey;
	}
	
	//Prepare the multi-curl array
	$node_count = count($nodes);
	
	$curl_arr = array();
	$master = curl_multi_init();
	
	for($i = 0; $i < $node_count; $i++)
	{
		$url =$nodes[$i];
		$curl_arr[$i] = curl_init($url);
		curl_setopt($curl_arr[$i], CURLOPT_RETURNTRANSFER, true);
		curl_multi_add_handle($master, $curl_arr[$i]);
	}
	
	do {
		curl_multi_exec($master,$running);
	} while($running > 0);
	
	for($i = 0; $i < $node_count; $i++) {
		$response = curl_multi_getcontent  ( $curl_arr[$i]  );
		$list = json_decode($response, true);
		if($list[total_results]!=0) {
			$articles[] = '<a href="'.stripslashes($list[documents][0][mendeley_url]).'" target="_blank">'.$list[documents][0][title].'</a>';
		}
	}
	//remove duplicates
	if(is_array($articles)) {
		$articles = array_unique($articles);
	}
	$artcount = count($articles);
	for($i=0,$artcount;$i<$artcount;$i++) {
			echo  '<div style="padding:5px;margin-top:5px;background:#f1f1f1">'.$articles[$i].'</div>';
	}



function removeCommonWords($input){
		$commonWords = array('a', 've','able','about','above','abroad','according','accordingly','across','actually','adj','after','afterwards','again','against','ago','ahead','ain\'t','all','allow','allows','almost','alone','along','alongside','already','also','although','always','am','amid','amidst','among','amongst','an','and','another','any','anybody','anyhow','anyone','anything','anyway','anyways','anywhere','apart','appear','appreciate','appropriate','are','aren\'t','around','as','a\'s','aside','ask','asking','associated','at','available','away','awfully','b','back','backward','backwards','be','became','because','become','becomes','becoming','been','before','beforehand','begin','behind','being','believe','below','beside','besides','best','better','between','beyond','both','brief','but','by','c','came','can','cannot','cant','can\'t','caption','cause','causes','certain','certainly','changes','clearly','c\'mon','co','co.','com','come','comes','concerning','consequently','consider','considering','contain','containing','contains','corresponding','could','couldn\'t','course','c\'s','currently','d','dare','daren\'t','definitely','described','despite','did','didn\'t','different','directly','do','does','doesn\'t','doing','done','don\'t','down','downwards','during','e','each','edu','eg','eight','eighty','either','else','elsewhere','end','ending','enough','entirely','especially','et','etc','even','ever','evermore','every','everybody','everyone','everything','everywhere','ex','exactly','example','except','f','fairly','far','farther','few','fewer','fifth','first','five','followed','following','follows','for','forever','former','formerly','forth','forward','found','four','from','further','furthermore','g','get','gets','getting','given','gives','go','goes','going','gone','got','gotten','greetings','h','had','hadn\'t','half','happens','hardly','has','hasn\'t','have','haven\'t','having','he','he\'d','he\'ll','hello','help','hence','her','here','hereafter','hereby','herein','here\'s','hereupon','hers','herself','he\'s','hi','him','himself','his','hither','hopefully', 'hooray','how','howbeit','however','hundred','i','i\'d','ie','if','ignored','i\'ll','i\'m','immediate','in','inasmuch','inc','inc.','indeed','indicate','indicated','indicates','inner','inside','insofar','instead','into','inward','is','isn\'t','it','it\'d','it\'ll','its','it\'s','itself','i\'ve','j','just','k','keep','keeps','kept','know','known','knows','l','last','lately','later','latter','latterly','least','less','lest','let','let\'s','like','liked','likely','likewise','little','look','looking','looks','low','lower','ltd','m','made','mainly','make','makes','many','may','maybe','mayn\'t','me','mean','meantime','meanwhile','merely','might','mightn\'t','mine','minus','miss','more','moreover','most','mostly','mr','mrs','much','must','mustn\'t','my','myself','n','name','namely','nd','near','nearly','necessary','need','needn\'t','needs','neither','never','neverf','neverless','nevertheless','new','next','nine','ninety','no','nobody','non','none','nonetheless','noone','no-one','nor','normally','not','nothing','notwithstanding','novel','now','nowhere','o','obviously','of','off','often','oh','ok','okay','old','on','once','one','ones','one\'s','only','onto','opposite','or','other','others','otherwise','ought','oughtn\'t','our','ours','ourselves','out','outside','over','overall','own','p','particular','particularly','past','per','perhaps','placed','please','plus','possible','presumably','probably','provided','provides','q','que','quite','qv','r','rather','rd','re','really','reasonably','recent','recently','regarding','regardless','regards','relatively','respectively','right','round','rt','s','said','same','saw','say','saying','says','second','secondly','see','seeing','seem','seemed','seeming','seems','seen','self','selves','sensible','sent','serious',
		'seriously','seven','several','shall','shan\'t','she','she\'d','she\'ll','she\'s','should','shouldn\'t','since','six','so','some','somebody','someday','somehow','someone','something','sometime','sometimes','somewhat','somewhere','soon','sorry','specified','specify','specifying','still','sub','such','sup','sure','t','take','taken','taking','tell','tends','th','than','thank','thanks','thanx','that','that\'ll','thats','that\'s','that\'ve','the','their','theirs','them','themselves','then','thence','there','thereafter','thereby','there\'d','therefore','therein','there\'ll','there\'re','theres','there\'s','thereupon','there\'ve','these','they','they\'d','they\'ll','they\'re','they\'ve','thing','things','think','third','thirty','this','thorough','thoroughly','those','though','three','through','throughout','thru','thus','till','to','together','too','took','toward','towards','tried','tries','truly','try','trying','t\'s','twice','two','u','un','under','underneath','undoing','unfortunately','unless','unlike','unlikely','until','unto','up','upon','upwards','us','use','used','useful','uses','using','usually','v','value','various','versus','very','via','viz','vs','w','want','wants','was','wasn\'t','way','we','we\'d','welcome','well','we\'ll','went','were','we\'re','weren\'t','we\'ve','what','whatever','what\'ll','what\'s','what\'ve','when','whence','whenever','where','whereafter','whereas','whereby','wherein','where\'s','whereupon','wherever','whether','which','whichever','while','whilst','whither','who','who\'d','whoever','whole','who\'ll','whom','whomever','who\'s','whose','why','will','willing','wish','with','within','without','wonder','won\'t','would','wouldn\'t','x','y','yes','yet','you','you\'d','you\'ll','your','you\'re','yours','yourself','yourselves','you\'ve','z','zero');
		return preg_replace('/\b('.implode('|',$commonWords).')\b/','',strtolower($input));
	}

//Removes any URLs and @twitter_names
function cleaner($url) {
  $U = explode(' ',$url);

  $W =array();
  foreach ($U as $k => $u) {
    if (stristr($u,'http') ||  (stristr($u,'@'))) {
      unset($U[$k]);
      return cleaner( implode(' ',$U));
    }
  }
  return implode(' ',$U);
}
?>